hydrolock question

[slapthefunkyfou]

First of all, I did do a thorough search on the subject and learned a lot of good stuff, but nothing quite matched my current situation.

I hydrolocked my engine for the first time the other day. I took out all the spark plugs, sprayed some wd40 into the cylinders and tried to turn the crankshaft(with a breaker bar from the front). Water and gunk came out of the holes and started leaking form an exhaust connection. It turned with normal resistance about a third of the way around both directions. After that it would barely turn with a ton of resistance but then spring right back. I'm guessing that I have a bent or broken rod now. I am hoping that someone else has had this problem and would maybe know what my problem is.

I did find a little water in the oil also, but not very much.

thanks, Matt

 

[410Fortune]

The fact that it rotates is a good sign.

Just because you cant get it to rotate more does not mean you are done for, when it gets to top dead center it can be a real PITA to rotate.
You ahve all the plugs out and the truck in N correct?

Also dont you already have a thread going on this? No need for more then 1 thread.....find the old one that way all the info is in one place

 

[slapthefunkyfou]

your right. I did already start a thread. I'll try to find that one again.

But since your here, When the motor gets to TDC, will it spring back or will it just stay where it is? This is a whole new experience for me.

 

[gijoecam]

If you've got all the plugs out, there should be no resistance, and only two pistons will be at TDC anyways. If it's springing back, it sounds like there may be something hanging up, and I'm honestly not sure what that could be. If it was a rod or something mechanical, it would hit solid (generally.... there's always exceptions, of course).

You need to get it up and running ASAP!!! Change the oil and tranny fluid right now, the diffs can wait a day or three without any long term damage. Gotta get the inside of the engine lubed before the bearings rust and seize to the journals.

-Joe